serialicon/mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    m_serialPort = new QSerialPort();

    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    if (m_serialPort->isOpen()) {
        m_serialPort->clear();
        m_serialPort->close();
        qDebug() << "exiting, clear and close serial port...";
    }
    delete m_serialPort;
    delete ui;
}

void MainWindow::msgBox(QWidget* ctx, QString title, QString content) {
    QMessageBox::information(ctx, title, content);
}

void MainWindow::msgBox(QWidget* ctx, QString content) {
    msgBox(ctx, "title", content);
}

void MainWindow::receiveData() {
    QByteArray data = m_serialPort->readAll();
    qDebug() << "\nreceived data:" << data.length() << data.toHex();
}


void MainWindow::on_btn_serial_search_clicked()
{
    QStringList m_serialPortNameList;

    foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        m_serialPortNameList << info.portName();
        qDebug() << "Serial port discovered:" << info.portName();
    }

    ui->comboBox_serial->clear();
    ui->comboBox_serial->addItems(m_serialPortNameList);
    if (m_serialPortNameList.length() > 0) {
        ui->comboBox_serial->setCurrentIndex(0);
    }
}


void MainWindow::on_btn_serial_toggle_clicked()
{
    if (ui->comboBox_serial->currentText() == "") {
        msgBox(this, "请选择串口");
        return;
    }
    if (m_serialPort->isOpen()) {
        m_serialPort->clear();
        m_serialPort->close();
        qDebug() << "Serial port closed";
        ui->btn_serial_toggle->setText("打开串口");

        // enable serial port comboBoxes
        ui->comboBox_serial->setDisabled(false);
        ui->comboBox_baud->setDisabled(false);
        ui->btn_serial_search->setDisabled(false);
    } else {
        m_serialPort->setPortName("/dev/" + ui->comboBox_serial->currentText());
        if (!m_serialPort->open(QIODevice::ReadWrite)) {
            msgBox(this, "串口打开失败", "串口被占用或不存在");
            qDebug() << "Serial open failed";
            return;
        }
        qDebug() << "Serial open successful";
        ui->btn_serial_toggle->setText("关闭串口");

        // handle baud rate
        QSerialPort::BaudRate t_BaudRate;
        switch (ui->comboBox_baud->currentIndex()) {
        case 0:
            t_BaudRate = QSerialPort::Baud2400;
            break;
        case 1:
            t_BaudRate = QSerialPort::Baud4800;
            break;
        case 2:
            t_BaudRate = QSerialPort::Baud9600;
            break;
        case 3:
            t_BaudRate = QSerialPort::Baud115200;
            break;
        default:
            t_BaudRate = QSerialPort::Baud9600;
            break;
        }

        // serial port configuration
        m_serialPort->setBaudRate(t_BaudRate);
        m_serialPort->setDataBits(QSerialPort::Data8);
        m_serialPort->setFlowControl(QSerialPort::NoFlowControl);
        m_serialPort->setParity(QSerialPort::NoParity);
        m_serialPort->setStopBits(QSerialPort::OneStop);
        connect(m_serialPort, SIGNAL(readyRead()), this, SLOT(receiveData()));

        // disable serial port comboBoxes
        ui->comboBox_serial->setDisabled(true);
        ui->comboBox_baud->setDisabled(true);
        ui->btn_serial_search->setDisabled(true);
    }
}


void MainWindow::on_comboBox_sys_mode_currentIndexChanged(int index)
{
    static char buff = 0xff;
    switch (index) {
    case 0:
        buff = CTRL_CODE_SYSMODE_Disable;
        break;
    case 1:
        buff = CTRL_CODE_SYSMODE_Telemetry;
        break;
    case 2:
        buff = CTRL_CODE_SYSMODE_Security;
        break;
    }

    if (!m_serialPort->isOpen()) {
        msgBox(this, "未连接设备");
        return;
    }

    m_serialPort->write(&buff, sizeof(buff));
}


void MainWindow::on_comboBox_cycle_currentIndexChanged(int index)
{
    static char buff = 0xff;
    switch (index) {
    case 0:
        buff = CTRL_CODE_CYCLE_500ms;
        break;
    case 1:
        buff = CTRL_CODE_CYCLE_1s;
        break;
    case 2:
        buff = CTRL_CODE_CYCLE_2s;
        break;
    case 3:
        buff = CTRL_CODE_CYCLE_5s;
        break;
    }

    if (!m_serialPort->isOpen()) {
        msgBox(this, "未连接设备");
        return;
    }

    m_serialPort->write(&buff, sizeof(buff));
}


void MainWindow::on_comboBox_temp_fetch_currentIndexChanged(int index)
{
    static char buff = 0xff;
    switch (index) {
    case 0:
        buff = CTRL_CODE_TEMP_Disable;
        break;
    case 1:
        buff = CTRL_CODE_TEMP_Enable;
        break;
    }

    if (!m_serialPort->isOpen()) {
        msgBox(this, "未连接设备");
        return;
    }

    m_serialPort->write(&buff, sizeof(buff));
}


void MainWindow::on_comboBox_body_fetch_currentIndexChanged(int index)
{
    static char buff = 0xff;
    switch (index) {
    case 0:
        buff = CTRL_CODE_BODY_Disable;
        break;
    case 1:
        buff = CTRL_CODE_BODY_Buzzer;
        break;
    case 2:
        buff = CTRL_CODE_BODY_Light;
        break;
    }

    if (!m_serialPort->isOpen()) {
        msgBox(this, "未连接设备");
        return;
    }

    m_serialPort->write(&buff, sizeof(buff));
}


void MainWindow::on_comboBox_gas_fetch_currentIndexChanged(int index)
{
    static char buff = 0xff;
    switch (index) {
    case 0:
        buff = CTRL_CODE_GAS_Disable;
        break;
    case 1:
        buff = CTRL_CODE_GAS_State;
        break;
    case 2:
        buff = CTRL_CODE_GAS_Data;
        break;
    }

    if (!m_serialPort->isOpen()) {
        msgBox(this, "未连接设备");
        return;
    }

    m_serialPort->write(&buff, sizeof(buff));
}